Keiko, Jamie , Kiwamu

The I and Q orthogonalities of REFL33 and 165 demodulation board were measured by "orthogonality.py"  Python package scipy were addied on Pianosa to run this code. Please note that "orthogonality.py" can be run only on Pianosa.  

The results were:

REFL165

ABS = 1.070274, PHASE = -81.802479 [deg]

if you wanna change epics values according to this result, just copy and execute the following commands

ezcawrite C1:LSC-REFL165_Q_GAIN 0.934340 && ezcawrite C1:LSC-REFL165_PHASE_D -81.802479

- - - - - - - - - - - - - - - - - -

REFL33

ABS = 1.016008 , PHASE = -89.618724 [deg]

if you wanna change epics values according to this result, just copy and execute the following commands

ezcawrite C1:LSC-REFL33_Q_GAIN 0.984244 && ezcawrite C1:LSC-REFL33_PHASE_D -89.618724

Fig.1 and 2  are the resulting plots for 33 and 165 MHz demod baoards, respectively.You should look at the 3Hz in x axis, as the demodulated signal frequency was set as 3 Hz.

Fig. 1 REFL33 I and Q orthogonality at 3 Hz.

Fig. 2 REFL165 I and Q orthogonality at 3 Hz.